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lib/CSS/Prepare/Property/Font.pm  view on Meta::CPAN

package CSS::Prepare::Property::Font;

use Modern::Perl;
use CSS::Prepare::Property::Values;



sub parse {
    my $self        = shift;
    my $has_hack    = shift;
    my $location    = shift;
    my %declaration = @_;
    
    my $property = $declaration{'property'};
    my $value    = $declaration{'value'};
    my %canonical;
    my @errors;
    
    my $valid_property_or_error = sub {
            my $type  = shift;
            
            my $sub      = "is_${type}_value";
            my $is_valid = 0;
            
            eval {
                no strict 'refs';
                $is_valid = &$sub( $value );
            };
            
            if ( $is_valid ) {
                $canonical{ $property } = $value;
            }
            else {
                $type =~ s{_}{-}g;
                push @errors, {
                        error => "invalid ${type} property: '${value}'"
                    };
            }
        };
    
    &$valid_property_or_error( 'font_style' )
        if 'font-style' eq $property;
    
    &$valid_property_or_error( 'font_variant' )
        if 'font-variant' eq $property;
    
    &$valid_property_or_error( 'font_weight' )
        if 'font-weight' eq $property;
    
    &$valid_property_or_error( 'font_size' )
        if 'font-size' eq $property;
    
    &$valid_property_or_error( 'font_family' )
        if 'font-family' eq $property;
    
    if ( 'font' eq $property ) {
        my $shorthand_properties = qr{
                ^
                (?:
                    (?: (?'style'   $font_style_value ) \s+ )?
                    (?: (?'variant' $font_variant_value ) \s+ )?
                    (?: (?'weight'  $font_weight_value ) \s+ )?
                )*